About This

• [AUTOMATIC TEMPERATURE CONTROL] Ingenious temperature sensitive cylinder automatically opens and closes your greenhouse windows at 15 25°C (60 77°F) to maintain ideal growing conditions and prevent overheating no manual intervention needed for consistent plant health.
• [DURABLE STAINLESS STEEL CONSTRUCTION] Crafted with stainless steel and an elongated aluminum cylinder this vent opener resists rust and weather damage ensuring reliable long lasting performance in outdoor greenhouse environments year after year.
• [EFFORTLESS ECOLOGICAL OPERATION] Operates entirely without electricity or batteries using a self contained ecological thermal mechanism to power the vent movement saving energy and reducing your carbon footprint while keeping plants safe from heat stress.
• [SIMPLE WIDE APPLICATION] Designed for easy manual replacement and straightforward installation on most aluminum frame greenhouses this single spring vent opener fits standard greenhouse windows and provides dependable automatic ventilation for your growing space.
• [ADJUSTABLE RELIABLE PERFORMANCE] Features an adjustable temperature range from 15 25°C with maximum opening at 30° a 15lb load bearing capacity and 17.71 inch opening distance delivering consistent vent control for optimal airflow.